My understanding is that they're talking about the Swift compiler having an embedded Clang, not embedding Clang into all binaries. So no, not much that can go w

My understanding is that they're talking about the Swift compiler having an embedded Clang, not embedding Clang into all binaries. So no, not much that can go wrong, the Swift and Clang compilers are both part of the same wider LLVM ecosystem so marry together neatly to be able to provide this interoperability.